BTW, personally, I've given up on filters for most trips, and I've had good success using resublimated iodine crystals, much like "Polar Pure." Cheaper than the little pills, and easier to adjust the dose. I don't run into many of us iodine users anymore.

Jeff [/quote]

Very interesting. I've been thinking of doing the same thing. The only reason I've stayed with the filters is to remove chemicals, but away from civilization, this may not be as important.

Why not start another thread and give us more info on your reasons, etc.? I'd sure be interested.